4. Polygons and Angles
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Two angles are complementary if the sum of their measures is 90∘. Two angles are supplementary if the sum of their measures is 180∘.
Complementary
Let's start by recalling the definitions of complementary and supplementary angles.
Complementary Angles | Supplementary Angles |
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Two angles are complementary if the sum of their measures is 90∘. | Two angles are supplementary if the sum of their measures is 180∘. |